首页> 美国卫生研究院文献>Journal of Research of the National Institute of Standards and Technology >Treasure of the Past VI: Standard Potential of the Silver-Silver-Chloride Electrode from 0° to 95° C and the Thermodynamic Properties of Dilute Hydrochloric Acid Solutions
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Treasure of the Past VI: Standard Potential of the Silver-Silver-Chloride Electrode from 0° to 95° C and the Thermodynamic Properties of Dilute Hydrochloric Acid Solutions

机译:过去的珍宝:0°至95°C的银氯化银电极的标准电势和稀盐酸溶液的热力学性质

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摘要

From electromotive-force measurements of the cell without liquid junction: Pt;  H2,  HCl (m),  AgCl;  Agthrough the range 0° to 95° C, calculations have been made of (1) the standard potential of the silver–silver-chloride electrode, (2) the activity coefficient of hydrochloric acid in aqueous solutions from m (molality) =0 to m=0.1 and from 0° to 90° C, (3) the relative partial molal heat content of hydrochloric acid, and (4) the relative partial molal heat capacity of hydrochloric acid.The extrapolations were made by the method of least squares with the aid of punch-card techniques. Data from at least 24 cells were analyzed at each temperature, and 81 cells were studied at 25° C. The value of the standard potential was found to be 0.22234 absolute volt at 25° C, and the standard deviation was 0.02 millivolt at 0° C, 0.01 millivolt at 25° C, and 0.09 millivolt at 95° C. The results from 0° to 60° C are compared with earlier determinations of the standard potential and other quantities derived from the electromotive force.
机译:根据无液结电池的电动势测量:Pt; H2,HCl(m),AgCl;在0°至95°C的温度范围内,已计算出(1)银-氯化银电极的标准电势,(2)水溶液中盐酸的活度系数从m(摩尔)= 0到m = 0.1且从0°到90°C,(3)盐酸的相对部分摩尔热容,和(4)盐酸的相对部分摩尔热容。通过最小二乘法用打孔卡技术的帮助。在每个温度下分析至少24个电池的数据,并在25°C下研究81个电池。发现25°C下的标准电势值为0.22234绝对伏特,0°C下的标准偏差为0.02毫伏。 C,25°C时为0.01毫伏,95°C时为0.09毫伏。将0°至60°C的结果与标准电位的早期测定值以及由电动势得出的其他量进行比较。

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